<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>弹性盒练习</title>
    <style>
        * {
            margin: 0;
            padding: 0;
        }
        ul {
            list-style: none;
            display: flex;
        }
        .center {
            width: 1000px;
            margin: 0 auto;
        }
        .server {
            background-color: #e8e8e8;
        }
        ul li {
            width: 250px;
            text-align: center;
            margin: 50px 0;
        }
    </style>
</head>
<body>
<div class="server">
    <div class="center">
        <!-- ul>li*4>img+p -->
        <ul>
            <li>
                <img src="img/icon1.png">
                <p>品质保障</p>
            </li>
            <li>
                <img src="img/icon2.png">
                <p>私人订制</p>
            </li>
            <li>
                <img src="img/icon3.png">
                <p>学员特供</p>
            </li>
            <li>
                <img src="img/icon4.png">
                <p>专属特权</p>
            </li>
        </ul>
    </div>
</div>
</body>
</html>